Jim Dandy...do you REALLY think that a violent felon really cares what the law is? If you think that the NCIS data base is useful you are deluding yourself.
You can even go beyond purchases...look at the Phillipines during WWII...where did the local population get their hand guns from? They manufactured them, (cottage industry)...and they were NOT that crude,
We do not need any "prohibited persons". What makes you so holy that your life is more valuable that the guy that has a DV conviction 40 years ago?
If someone has convicted a violent crime, and is a danger to society, that person need to be removed from society. Otherwise, when not incarcerated, they should be treated like everyone else.